when he feel scary, too intense.. they'll use their nails to scratch people..
Cat scratch on their owner is normal for first 2mths he arrived in your house.. cos he doesn't know whats going on.. he just protect himself.. but if u keep playing with him.. not long he'll stop.. n he knows u really loves him (cos u don't mind him being naughty)
if u too scray of him to scratch u.. either when he scratch to u.. use strong tone to say NO!.. or if leave him alone. not too long he'll wonder r u his owner!!.. cos u too scray to play with him >.>
in my house i got 2 bunnys n cat, my hands, arms n legs got more then 20 scras n bited marks (1 of the dwarf bunny will sudden attack - bite me) . Although i scray to play with them.. but didn't mean i don't love them n stop play with them.. becoz i always don't mind what they did to me.. nowaday if they saw me.. they'll come to me n give me a kiss ^^ . Also everytime i call my cat.. no mattern how far he is (i let him outside everyday) he'll show up front of me less then 3mins
when ur cat knows u more; they'll know u r friendly n trustable.. which mean stop scratch/attack u.